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June 13th, 2026 :: 7:11 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 13th at 5:54 am 
Temperature:63°F Dew Point:57°F
Barometer:30.01 inHg Wind:N 9 Mph
Humidity:82.5% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 13th
Sunday
Jun 14th
Monday
Jun 15th
Tuesday
Jun 16th
Wednesday
Jun 17th
Mostly Sunny Mostly Sunny Mostly Sunny Thundershowers Thundershowers
81°F
69°F
58°F
74°F
56°F
75°F
57°F
78°F
63°F
 
 Decatur Detailed Weather Forecast  
 
Saturday, June 13th, 2026
Morning Temperature: 69°F
Mostly sunny. Windy at times.
Afternoon Temperature: 80°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 75°F
Mostly clear with a slight chance of showers or thundershowers.
Sunday, June 14th, 2026
Overnight Temperature: 68°F
A mix of cloudy and clear skies with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Morning Temperature: 64°F
A mix of sun and cloud with a slight chance of showers. Windy at times.
Afternoon Temperature: 69°F
Mostly sunny. Windy at times.
Evening Temperature: 61°F
Clear. Windy at times.
Monday, June 15th, 2026
Overnight Temperature: 56°F
A mix of clear and cloudy skies.
Morning Temperature: 63°F
Mostly sunny. Windy at times.
Afternoon Temperature: 73°F
Mostly sunny with a slight chance of showers. Windy at times.
Evening Temperature: 64°F
Clear.
Tuesday, June 16th, 2026
Overnight Temperature: 58°F
Clear.
Morning Temperature: 66°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 73°F
Mostly cloudy with a chance of showers or thundershowers. Windy.
Evening Temperature: 66°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Wednesday, June 17th, 2026
Overnight Temperature: 63°F
Mostly cloudy with showers likely. Windy at times.
Morning Temperature: 69°F
Sunny with cloudy periods with a chance of showers or thundershowers. Windy.
Afternoon Temperature: 76°F
Cloudy with sunny periods with a chance of showers or thundershowers. Windy.
Evening Temperature: 73°F
A mix of cloudy and clear skies with showers. Chance of a thunderstorm. Windy.
Thursday, June 18th, 2026
Overnight Temperature: 65°F
A mix of clear and cloudy skies with a few showers.
Morning Temperature: 67°F
A mix of cloud and sun.
Afternoon Temperature: 75°F
A mix of sun and cloud.
Evening Temperature: 67°F
Clear.
Friday, June 19th, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 65°F
Sunny. Windy at times.
Afternoon Temperature: 72°F
Sunny. Windy at times.
Evening Temperature: 64°F
Clear.
Saturday, June 20th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 64°F
Sunny.
Afternoon Temperature: 76°F
Sunny. Windy at times.
Evening Temperature: 70°F
Mostly clear.
Sunday, June 21st, 2026
Overnight Temperature: 63°F
Clear with cloudy periods.
Morning Temperature: 70°F
A mix of sun and cloud. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 81°F
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
A mix of clear and cloudy skies with a chance of showers or thundershowers.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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